#!/bin/bash
# $Id: fctStartAdsl,v 1.25 2005/01/16 22:04:34 Tux Exp $

# Copyright (C) 2003-2005 Olivier Borowski
# 
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
# 
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
# 
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

# Goal :
#	start ADSL connexion (do not display anything)
# Params :
#	h = display help
#	m = start mire
#	s = simple mode (don't use ifup & ifdown scripts => do not requiere ifcfg-ethX)
#	t = set timeout delay (default=60s)
#	a = use ip address (use -a xx.xx.xx.xx), imply simple mode
#	d = launch pppd in debug mode
#	i = for launch with pty option of pppd
#		// old usage : only put modem interface up (ifup ethX)
#	k = keep: garder la main Ns (ou jusqu' ce que connexion ok)
# Error codes :
#	1 = pppd already lauched (non degroup)
#	2 = modem can't be synchronized
#	3 = can't launch pppd
#	4 = can't set modem interface "up"
#	5 = eagle-usb must be configured once time
#	6 = non pppd users can't use startadsl -m

# the following line will be replaced by the absolute path of setvars
exit 123

set -- "${@//#--help/-h}"
set -- "${@//#--mire/-m}"
set -- "${@//#--simple/-s}"
set -- "${@//#--timeout=/-t}"
set -- "${@//#--ifup/-i}"
set -- "${@//#--ip=/-a}"
set -- "${@//#--ip/-a}"
set -- "${@//#--keep=/-k}"
set -- "${@//#--debug/-d}"
evalParams() {
	while getopts "hmst:a:dik:" opt; do
		case $opt in
			h  ) doInUtf8 echo -e $FCTSTART_USAGE_MSG ; exit 0 ;;
			m  ) MIRE=1 ;;
			s  ) SIMPLE=1 ;;
			t  ) TIMEOUT=$OPTARG ;;
			a  ) STATIC_IP=$OPTARG ; SIMPLE=1 ;;
			d  ) PPPD_DEBUG=1 ;;
			i  ) DONT_START=1 ;;
			k  ) KEEP=$OPTARG ;;
			\? ) doInUtf8 echo -e $FCTSTART_USAGE_MSG ; exit 1 ;;
		esac
	done
}
ping_test_mt() {
	touch /tmp/setvars_ping_mt
	PING_MT_RES=1
	while [ $PING_MT_RES -ne 0 ]
	do
		sleep 2
		ping_w $1 $2
		PING_MT_RES=$?
	done
	rm -f /tmp/setvars_ping_mt
}
ping_w_maxtimeout() {
	ping_test_mt $1 $2 &
	PID_PING_MT=$!
	kill_ping $PID_PING_MT $2 &
	wait ${PID_PING_MT} 2>/dev/null
	if [ -e /tmp/setvars_ping_mt ] ; then
		rm -f /tmp/setvars_ping_mt
		return 1
	fi
	return 0
}
#STATIC_IP="none"
MIRE=0
TIMEOUT=60
DONT_START=0
PPPD_DEBUG=0
KEEP=0
evalParams "$@"


# eagleconfig has never been run => quit
if [ -f $EU_DIR/eagle-usb_must_be_configured ] ; then
	exit 5
fi

if [ "$PPPOX" != "none" ] ; then

	# startadsl or startmire?
	if [ $MIRE -eq 1 ] ; then
		OPTIONS=$PPP_OPTIONS_MIRE
	else
		OPTIONS=$PPP_OPTIONS_ADSL
	fi

	# pppd already lanched?
	if [ $DONT_START -eq 0  -a  ! -z "`pidof pppd`" ] ; then
		exit 1
	fi

else
	# mire can only be used by pppd users
	if [ $MIRE -eq 1 ] ; then
		exit 6
	fi
fi

# waiting Nsec for synchro (default: N=60)
$EAGLECTRL -s$TIMEOUT &>/dev/null

if [ $? -ne 0 ] ; then
	exit 2
fi

if [ ! -z "`route | grep default`" ] ; then
	route del default
fi

INTERFACE="`$EAGLECTRL -i`"

if [ "$PPPOX" = "none" ] ; then
	# ===== non pppd => only ifup =====
	if [ "$STATIC_IP" != "none" ] ; then
			GATEWAY="`echo $STATIC_IP | cut -d '.' -f1-3`.254"
			ifconfig $INTERFACE $STATIC_IP netmask 255.255.255.0
			if [ $? -ne 0 ] ; then exit 4 ; fi
			route add default gw $GATEWAY
	else
		if [ $USE_IFUPDOWN -eq 1  -a  $SIMPLE -eq 0 ] ; then
			ifup $INTERFACE &>/dev/null
		else
			dhclient $INTERFACE &>/dev/null
		fi
		if [ $? -ne 0 ] ; then exit 4 ; fi
	fi
else
	# ===== pppd => ifup & pppd =====
	if [ $DONT_START -eq 1 ] ; then
		RES="`ifconfig | grep $INTERFACE`"
		if [ -z "$RES" ] ; then
			# - pppd call adsl => interface is not up yet
			# - startadsl => interface is already up, skip this step
			if [ $USE_IFUPDOWN -eq 1  -a  $SIMPLE -eq 0 ] ; then
				ifup $INTERFACE &>/dev/null
			else
				ifconfig $INTERFACE 0.0.0.0 up
			fi
		fi
		exec $PPPOX -I $INTERFACE 2>/dev/null
	fi
	if [ $USE_IFUPDOWN -eq 1  -a  $SIMPLE -eq 0 ] ; then
		ifup $INTERFACE &>/dev/null
	else
		ifconfig $INTERFACE 0.0.0.0 up
	fi
	if [ "$DISTRIB" != "Suse" ] ; then
		if [ $PPPD_DEBUG -eq 0 ] ; then
			pppd file $OPTIONS &>/dev/null
		else
			pppd debug file $OPTIONS 2>&1 | logger
		fi
		if [ $? -ne 0 ] ; then exit 4 ; fi
	else
		if [ $PPPD_DEBUG -eq 0 ] ; then
			pppd file $OPTIONS &>/dev/null &
		else
			pppd debug file $OPTIONS 2>&1 | logger &
		fi
	fi
fi

if [ $KEEP != 0 ] ; then
	ping_w_maxtimeout 213.228.0.42 $KEEP
	exit $?
else
	exit 0
fi

#***************************************************************************
# $Log: fctStartAdsl,v $
# Revision 1.25  2005/01/16 22:04:34  Tux
# - add license header
#
# Revision 1.24  2005/01/04 21:14:05  Tux
# - switch strings to utf-8
#
# Revision 1.23  2004/11/21 15:29:41  Tux
# - replaced == with -eq
#
# Revision 1.22  2004/11/11 16:21:26  mcoolive
# - renaming $EU_SCRIPT_DIR/lock in $EU_DIR/eagle-usb_must_be_configured
#
# Revision 1.21  2004/11/11 15:29:10  mcoolive
# - improve comments
#
# Revision 1.20  2004/11/11 10:56:04  mcoolive
# - tests are simplified ( && -> -a ; || -> -o )
#
# Revision 1.19  2004/11/04 23:54:18  mcoolive
# - shift error>=7 (exit and comments) for the "6 = modem not operational"
#
# Revision 1.18  2004/11/04 20:03:42  Tux
# - only allow users using pppd to connect to the mire
#
# Revision 1.17  2004/09/28 10:06:43  mcoolive
# - to respect POSIX: commands are typed "int main..."
#   => replace "$? !="  by  "$? -ne"
#
# Revision 1.16  2004/09/14 21:00:31  Tux
# - redirect debug mode (-d) output to syslog instead of /dev/null !
#
# Revision 1.15  2004/08/26 21:40:48  Tux
# - add exec to avoid an unuseful process
#
# Revision 1.14  2004/08/10 16:51:13  Tux
# - removed an unuseful condition
#
# Revision 1.13  2004/08/09 21:26:31  Tux
# - add pppoe support for "fctStartAdsl -i"
#
# Revision 1.12  2004/08/01 20:12:07  Tux
# - hide messages when launching startadsl within a terminal
#
# Revision 1.11  2004/07/19 20:43:21  Tux
# - "fctStartAdsl -i" now start pppoa itself (no more use of  pty "...pppoa -I $IF" )
#
# Revision 1.10  2004/07/16 21:08:58  Tux
# - simplify parameters processing
#
# Revision 1.9  2004/06/08 19:47:05  Tux
# - 1.9.8
#
# Revision 1.8  2004/04/24 10:57:14  Tux
# - network mask changed from 255.255.255.255 to 255.255.255.0
#   for non-pppd users
#
# Revision 1.7  2004/04/21 20:07:52  Tux
# *** empty log message ***
#
# Revision 1.6  2004/04/21 19:59:37  Tux
# - virtual interface does not use an IP anymore
#
# Revision 1.5  2004/04/21 18:19:21  Tux
# - some changes with ">/dev/null"
#
#***************************************************************************/